set.seed(888);
setwd('/home/song/project/going/neo4j/demo/code/');
source('write.R');
setwd('/home/song/project/going/neo4j/demo/code/');
source('readPoint.R');
setwd('/home/song/project/going/neo4j/demo/code/');
source('get-range.R');
setwd('/home/song/project/going/neo4j/demo/code/');
source('read-write.R');
library(grid)
library(gridExtra)
#multiplot(P.1, P.2, P.3, P.4);
grid.arrange(P.1, P.2, P.3, P.4, ncol = 4);
